Let me understand you: you live in the US and plan to go to China to attend an erhu (summer) camp? I would advise against it.
When I started my musical journey I wanted to learn the hulusi. I Googled hulusi teachers in the UK but all I found was a summer camp for the hulusi held at the Wudang Mountains, China. Needless to say it was prohibitively expensive.
If you wish for a holiday in China which also includes erhu tuition then I'd say go for it but if you wish for an intensive erhu course there must be cheaper ways of doing it.
I suppose it depends on how confident you are and your Mandarin level, my Mandarin is not that good but I can travel independently in China. Late spring this year I made an "erhu centric holiday" , spending a week pottering around Wuxi and Suzhou in Jiangsu province. Call it a homage to Abing. I had a wonderful time. This is my approach to learning erhu. I practice every day, working on my technique and slowly building my repertoire. For style and feeling, I spend time in China (I am lucky my job takes me to China regularly). I am very interested in public park / street performance. It's a great way to meet erhu players, listen, learn and join in! However if you are looking for a "summer camp" traditional learning type experience you might be better off spending a couple of weeks in Singapore and arranging lessons at Eason Music. Best wishes for your erhu journey! Richard.